AccessibilityNodeInfo.AccessibilityAction

A class defining an action that can be performed on an AccessibilityNodeInfo.
Each action has a unique id that is mandatory and optional data.

There are three categories of actions:

Standard actions - These are actions that are reported and
handled by the standard UI widgets in the platform. For each standard action
there is a static constant defined in this class, e.g. ACTION_FOCUS.
These actions will have null labels.

Custom actions action - These are actions that are reported
and handled by custom widgets. i.e. ones that are not part of the UI toolkit. For
example, an application may define a custom action for clearing the user history.

Overriden standard actions - These are actions that override
standard actions to customize them. For example, an app may add a label to the
standard ACTION_CLICK action to announce that this action clears browsing history.

Causes the current thread to wait until another thread invokes the
notify() method or the
notifyAll() method for this object, or
some other thread interrupts the current thread, or a certain
amount of real time has elapsed.

Public constructors

AccessibilityNodeInfo.AccessibilityAction

Creates a new AccessibilityAction. For adding a standard action without a specific label,
use the static constants.
You can also override the description for one the standard actions. Below is an example
how to override the standard click action by adding a custom label:

Public methods

equals

It is reflexive: for any non-null reference value
x, x.equals(x) should return
true.

It is symmetric: for any non-null reference values
x and y, x.equals(y)
should return true if and only if
y.equals(x) returns true.

It is transitive: for any non-null reference values
x, y, and z, if
x.equals(y) returns true and
y.equals(z) returns true, then
x.equals(z) should return true.

It is consistent: for any non-null reference values
x and y, multiple invocations of
x.equals(y) consistently return true
or consistently return false, provided no
information used in equals comparisons on the
objects is modified.

For any non-null reference value x,
x.equals(null) should return false.

The equals method for class Object implements
the most discriminating possible equivalence relation on objects;
that is, for any non-null reference values x and
y, this method returns true if and only
if x and y refer to the same object
(x == y has the value true).

Note that it is generally necessary to override the hashCode
method whenever this method is overridden, so as to maintain the
general contract for the hashCode method, which states
that equal objects must have equal hash codes.

getLabel

hashCode

Returns a hash code value for the object. This method is
supported for the benefit of hash tables such as those provided by
HashMap.

The general contract of hashCode is:

Whenever it is invoked on the same object more than once during
an execution of a Java application, the hashCode method
must consistently return the same integer, provided no information
used in equals comparisons on the object is modified.
This integer need not remain consistent from one execution of an
application to another execution of the same application.

If two objects are equal according to the equals(Object)
method, then calling the hashCode method on each of
the two objects must produce the same integer result.

It is not required that if two objects are unequal
according to the equals(java.lang.Object)
method, then calling the hashCode method on each of the
two objects must produce distinct integer results. However, the
programmer should be aware that producing distinct integer results
for unequal objects may improve the performance of hash tables.

As much as is reasonably practical, the hashCode method defined by
class Object does return distinct integers for distinct
objects. (This is typically implemented by converting the internal
address of the object into an integer, but this implementation
technique is not required by the
Java™ programming language.)

Returns

int

a hash code value for this object.

toString

Returns a string representation of the object. In general, the
toString method returns a string that
"textually represents" this object. The result should
be a concise but informative representation that is easy for a
person to read.
It is recommended that all subclasses override this method.

The toString method for class Object
returns a string consisting of the name of the class of which the
object is an instance, the at-sign character `@', and
the unsigned hexadecimal representation of the hash code of the
object. In other words, this method returns a string equal to the
value of: